If your phone starts going crazy tomorrow, don’t be alarmed – it’s only a test.

FEMA will be launching a Nationwide Emergency Alert Test this Wednesday (10/4).

Every cell phone, radio, and TV will blare that familiar warning tone, followed by a voice explaining it’s only a test.

The test is scheduled for Wednesday, Oct. 4th at 2:20pm ET (1:20pm CT). It will last roughly one minute.

Do you think the EAS would be effective in an actual emergency?

(Photo courtesy of fema.gov)